Application: Shell da área de trabalho do Plasma (plasma-desktop), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fbb096f5780 (LWP 10136))]

Thread 3 (Thread 0x7fbadf601700 (LWP 10169)):
#0  0x00007fbafd1bf325 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fbafd1bf599 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fbafd183851 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fbafd183f5b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fbafd184164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fbb061a7426 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#6  0x00007fbb06176c82 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#7  0x00007fbb06176ed7 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#8  0x00007fbb06075fa7 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#9  0x00007fbb061569ff in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#10 0x00007fbb06078fcb in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#11 0x00007fbafda88e9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#12 0x00007fbb08fd64bd in clone () from /lib/x86_64-linux-gnu/libc.so.6
#13 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7fbad5d1a700 (LWP 10230)):
#0  0x00007fbafda8cd84 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00007fbb02f5b222 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007fbb02f5b259 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007fbafda88e9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#4  0x00007fbb08fd64bd in clone () from /lib/x86_64-linux-gnu/libc.so.6
#5  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fbb096f5780 (LWP 10136)):
[KCrash Handler]
#6  0x00007fbb0553a654 in QWidgetPrivate::nearestGraphicsProxyWidget(QWidget const*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#7  0x00007fbb05563348 in QDesktopWidget::screenGeometry(QWidget const*) const () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#8  0x00007fbb05945018 in ?? () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#9  0x00007fbb05948251 in ?? () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#10 0x00007fbb059485f2 in QMenu::popup(QPoint const&, QAction*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#11 0x00007fbaea449dcf in ?? () from /usr/lib/kde4/plasma_applet_menubar.so
#12 0x00007fbaea449fcf in ?? () from /usr/lib/kde4/plasma_applet_menubar.so
#13 0x00007fbb0618c281 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#14 0x00007fbb06191179 in QObject::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#15 0x00007fbb054fa894 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#16 0x00007fbb054ff713 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#17 0x00007fbb06e55bb6 in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#18 0x00007fbb06177e9c in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#19 0x00007fbb061a91f2 in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#20 0x00007fbb061a6c0d in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#21 0x00007fbb061a6c31 in ?? () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#22 0x00007fbafd183d53 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007fbafd1840a0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007fbafd184164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007fbb061a73bf in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#26 0x00007fbb055a2d5e in ?? () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#27 0x00007fbb06176c82 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#28 0x00007fbb06176ed7 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#29 0x00007fbb0617bf67 in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#30 0x00007fbb092e2a13 in kdemain () from /usr/lib/kde4/libkdeinit/libkdeinit4_plasma-desktop.so
#31 0x00007fbb08f0576d in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6
#32 0x0000000000400671 in _start ()


Reproducible: Couldn't Reproduce

Steps to Reproduce:
1.open the dolphin click the panel "window menu bar" in any application of the widget.
2.few times to repeat the moves / clicks / close / open, fast may cause some bugs in widgets.
3.Please correct another error widgets in panels maximize (get bigger) at times unknown,
Actual Results:  
error in the shell with the dolphin crash kde running, system failure, is in a state of black screen and then recovers to its state normal.

Expected Results:  
An improvement in kde it still has many bugs.

I've had other bugs in widgets from kde and plasma, but I do not put them here, I really like the KDE desktop but these bugs will never get to be the most used.